A diver leaps into the air from a platform 5.0 m above the water’s surface. The diver’s initial speed is 4.4 m/s and her launch angle is 70°. How long is the diver in the air? How far from the end of the board does she hit the water?

True.it is better to buy a washer with a higher efficiency rating

The answer is trial 3.

Ohm's law tells you that i = v/r where v is equivalent voltage and r is equivalent resistance of the circuit
since all circuits have the same voltage, your question is really asking which circuit has the lowest total resistance, since the lower the resistance, the higher the current
circuit a has a resistance of 5 ohms; circuit c is in series so has a resistance of 10 ohms; circuit b is in parallel and therefore has a resistance of 2.5 ohms (review your notes on adding resistances in parallel and series); therefore b has the highest current

I’m not sure about this question